Contents type: Verbal, spatial. Period: 2013-present
| 3 | * |
| 8 | ** |
| 12 | ** |
| 14 | * |
| 15 | * |
| 19 | ** |
| 21 | * |
| 22 | *** |
| 27 | * |
| 28 | * |
| 29 | * |
| 30 | ** |
| 31 | * |
| 32 | * |
| 35 | ** |
| 43 | * |
| 46 | * |
| 49 | * |
| Test name | n | r | p value |
|---|---|---|---|
| Test For Genius - Revision 2010 | 5 | 0.98 | 0.05 |
| Cartoons of Shock | 4 | 0.97 | 0.10 |
| Gliaweb Recycled Intelligence Test | 7 | 0.96 | 0.02 |
| Test For Genius - Revision 2016 | 19 | 0.91 | 0.0001 |
| De Laatste Test - Herziening 2019 | 6 | 0.91 | 0.04 |
| A Relaxing Test (David Miller) | 14 | 0.91 | 0.001 |
| Verbal section of Test For Genius - Revision 2016 | 19 | 0.90 | 0.0001 |
| The Piper's Test | 14 | 0.89 | 0.001 |
| Verbal section of Test For Genius - Revision 2004 | 7 | 0.89 | 0.03 |
| Only idiots | 9 | 0.87 | 0.01 |
| Cooijmans Intelligence Test - Form 4 | 21 | 0.86 | 0.0001 |
| Verbal section of The Marathon Test | 15 | 0.85 | 0.001 |
| Combined Numerical and Spatial sections of Test For Genius - Revision 2010 | 5 | 0.83 | 0.10 |
| Problems In Gentle Slopes of the first degree | 11 | 0.83 | 0.009 |
| Numerical section of Test For Genius - Revision 2010 | 21 | 0.83 | 0.0002 |
| The Final Test - Revision 2013 | 7 | 0.83 | 0.04 |
| Spatial section of The Marathon Test | 15 | 0.83 | 0.002 |
| The Smell Test | 10 | 0.83 | 0.01 |
| The Gate | 5 | 0.82 | 0.10 |
| The Nemesis Test | 18 | 0.82 | 0.0007 |
| Laaglandse Aanlegtest - Herziening 2016 | 4 | 0.82 | 0.15 |
| The Marathon Test | 14 | 0.82 | 0.003 |
| Wechsler Adult Intelligence Scales | 7 | 0.81 | 0.05 |
| Qoymans Multiple-Choice #5 | 18 | 0.81 | 0.0009 |
| Labyrinthine LIMIT | 13 | 0.80 | 0.006 |
| Numerical and spatial sections of The Marathon Test | 15 | 0.80 | 0.003 |
| Three Sonnets (Heinrich Siemens) | 4 | 0.80 | 0.17 |
| Test of the Beheaded Man | 20 | 0.80 | 0.0005 |
| Gliaweb Riddled Intelligence Test - Revision 2011 | 16 | 0.79 | 0.002 |
| Narcissus' last stand | 19 | 0.79 | 0.0009 |
| Genius Association Test | 16 | 0.78 | 0.002 |
| The Sargasso Test | 23 | 0.78 | 0.0002 |
| Divine Psychometry (Matthew Scillitani) | 11 | 0.78 | 0.01 |
| Cooijmans Intelligence Test 5 | 18 | 0.77 | 0.002 |
| Combined Numerical and Spatial sections of Test For Genius - Revision 2016 | 19 | 0.76 | 0.001 |
| Psychometric Qrosswords | 12 | 0.74 | 0.01 |
| The Test To End All Tests | 17 | 0.74 | 0.003 |
| The Bonsai Test - Revision 2016 | 21 | 0.73 | 0.001 |
| Psychometrically Activated Grids Acerbate Neuroticism | 11 | 0.73 | 0.02 |
| Problems In Gentle Slopes of the third degree | 20 | 0.73 | 0.002 |
| Associative LIMIT | 16 | 0.72 | 0.005 |
| Random Feickery (Brandon Feick) | 9 | 0.72 | 0.04 |
| Spatial section of Test For Genius - Revision 2004 | 6 | 0.71 | 0.11 |
| Strict Logic Sequences Examination I (Jonathan Wai) | 5 | 0.71 | 0.15 |
| Tests by Jason Betts (aggregate) | 4 | 0.71 | 0.22 |
| The Alchemist Test (Anas El Husseini) | 15 | 0.70 | 0.009 |
| Reflections In Peroxide | 20 | 0.69 | 0.003 |
| Reason Behind Multiple-Choice - Revision 2008 | 18 | 0.67 | 0.006 |
| Space, Time, and Hyperspace - Revision 2016 | 19 | 0.67 | 0.005 |
| Numerical section of The Marathon Test | 16 | 0.65 | 0.01 |
| Tests by Ivan Ivec (aggregate) | 6 | 0.63 | 0.16 |
| Cooijmans Intelligence Test - Form 3 | 21 | 0.63 | 0.005 |
| A Paranoiac's Torture: Intelligence Test Utilizing Diabolic Exactitude | 19 | 0.61 | 0.01 |
| Lieshout International Mesospheric Intelligence Test | 18 | 0.60 | 0.01 |
| Problems In Gentle Slopes of the second degree | 15 | 0.58 | 0.03 |
| Cooijmans On-Line Test - Two-barrelled version | 11 | 0.56 | 0.08 |
| Daedalus Test | 14 | 0.55 | 0.05 |
| Isis Test | 15 | 0.48 | 0.07 |
| The Hammer Of Test-Hungry - Revision 2013 | 6 | 0.45 | 0.32 |
| De Golfstroomtest - Herziening 2019 | 5 | 0.37 | 0.46 |
| Reason - Revision 2008 | 18 | 0.37 | 0.12 |
| Miscellaneous tests | 11 | 0.33 | 0.30 |
| Gliaweb Raadselachtig Analogieproefwerk | 4 | 0.17 | 0.76 |
| Tests by Nikolaos Soulios (aggregate) | 6 | 0.06 | 0.90 |
Weighted mean of correlations: 0.732 (N = 827)
Estimated g factor loading: 0.86
Ranking in above table is based on the unrounded correlations. All available data is present in this table, no tests are left out except for those with less than 4 score pairs. All known pairs are used, including possible floor/ceiling scores or outliers.
These are estimated g factor loadings, but against homogeneous tests (containing only particular item types) as opposed to non-compound heterogeneous tests. Although tending to surprise the lay person, it is not uncommon for tests to have high loadings on item types they do not actually contain themselves. Such loadings reflect the empirical fact that most tests for mental abilities measure primarily g, regardless of their contents; that the major part of test score variance is caused by g, and only a minor part by factors germane to particular item types. It is of key importance to understand that this is a fact of nature, a natural phenomenon, and not something that was built into the tests by the test constructors.
| Type | n | g loading of Dicing with death on that type |
|---|---|---|
| Verbal | 115 | 0.89 |
| Numerical | 42 | 0.86 |
| Spatial | 58 | 0.83 |
| Logical | 32 | 0.67 |
| Heterogeneous | 405 | 0.87 |
N = 652
Compound tests have been left out of this table to avoid overlap.
Balanced g loading = 0.82
| Country | n | median score |
|---|---|---|
| United_States | 10 | 30.0 |
Total number of countries: 13
For reasons of privacy, only countries with 3 or more candidates are included in this table. Ranking is based on the medians, and then alphabetic.
| Personalia | n | r | p value |
|---|---|---|---|
| PSIA Introverted - Revision 2007 | 15 | 0.78 | 0.003 |
| PSIA Rational - Revision 2007 | 15 | 0.73 | 0.006 |
| Observed behaviour | 9 | 0.67 | 0.06 |
| PSIA Deviance factor - Revision 2007 | 15 | 0.62 | 0.02 |
| PSIA Extreme - Revision 2007 | 15 | 0.61 | 0.02 |
| PSIA System factor - Revision 2007 | 15 | 0.51 | 0.06 |
| PSIA Cold - Revision 2007 | 15 | 0.49 | 0.07 |
| PSIA True - Revision 2007 | 15 | 0.47 | 0.08 |
| PSIA Ethics factor - Revision 2007 | 15 | 0.43 | 0.10 |
| Father's educational level | 20 | 0.39 | 0.09 |
| PSIA Aspergoid - Revision 2007 | 15 | 0.36 | 0.18 |
| PSIA Just - Revision 2007 | 15 | 0.30 | 0.27 |
| Educational level | 23 | 0.26 | 0.22 |
| PSIA Orderly - Revision 2007 | 15 | 0.24 | 0.38 |
| PSIA Rare - Revision 2007 | 15 | 0.22 | 0.40 |
| Sex | 25 | 0.22 | 0.28 |
| Mother's educational level | 20 | 0.17 | 0.44 |
| Disorders (parents and siblings) | 22 | 0.17 | 0.44 |
| Year of birth | 25 | 0.03 | 0.90 |
| Disorders (own) | 24 | 0.02 | 0.92 |
| PSIA Neurotic - Revision 2007 | 15 | -0.11 | 0.68 |
| PSIA Cruel - Revision 2007 | 15 | -0.26 | 0.34 |
| Gifted Adult's Inventory of Aspergerisms | 10 | -0.33 | 0.34 |
| PSIA Antisocial - Revision 2007 | 15 | -0.36 | 0.17 |
| Cooijmans Inventory of Neo-Marxist Attitudes | 10 | -0.39 | 0.25 |
Notice: A correlation is generally considered significant if its p value is 0.05 or less.
The goal of estimated g factor loadings for restricted ranges is to verify the hypothesis that g becomes less important, accounts for a smaller proportion of the variance, at higher I.Q. levels. The mere fact of restricting the range like this also depresses the g loading compared to computing it over the test's full range, so it would be normal for these values to be lower than the test's full-range g loading.
| Below 1st quartile (15.0) | 0.76 (N = 236) |
|---|---|
| Below median (22.0) | 0.73 (N = 457) |
| Above median (22.0) | 0.80 (N = 455) |
| Above 3rd quartile (31.0) | 0.69 (N = 170) |
| Age class | n | Median score |
|---|---|---|
| 50 to 54 | 2 | 21.5 |
| 45 to 49 | 1 | 27.0 |
| 40 to 44 | 3 | 28.0 |
| 35 to 39 | 2 | 25.5 |
| 30 to 34 | 6 | 20.5 |
| 25 to 29 | 5 | 22.0 |
| 22 to 24 | 2 | 22.0 |
| 20 or 21 | 3 | 19.0 |
| 18 or 19 | 1 | 49.0 |
N = 25
| Year taken | n | Median score | protonorm |
|---|---|---|---|
| 2013 | 2 | 15.0 | 358 |
| 2015 | 1 | 28.0 | 451 |
| 2019 | 2 | 27.0 | 441 |
| 2020 | 4 | 25.5 | 434 |
| 2021 | 3 | 30.0 | 478 |
| 2022 | 3 | 35.0 | 527 |
| 2023 | 4 | 11.5 | 326 |
| 2024 | 2 | 11.0 | 322 |
| 2025 | 2 | 36.0 | 535 |
| 2026 | 2 | 17.5 | 371 |
N = 25
| Verbal × Spatial | 0.59 | (p value: 0.004) |
Ideal values for correlations between sections are around .5, thus being a compromise between the test's ability to yield a "profile" and its ability to provide an indication of general intelligence. With a too high correlation (like .8 or higher) the sections measure basically the same so there is almost no profile information in them, with a too low correlation (like .2 or lower) the sections are so different that there is little point in combining them into a measure of general intelligence.
Prop. = proportion of candidates outscored in this section. In parentheses the proportion outscored for any possible scores higher than the present score but lower than the next-higher score in the table.
| Score | Prop. | # scores (* = 1 score) |
|---|---|---|
| 3 | 0.020 (0.040) | * |
| 8 | 0.100 (0.160) | *** |
| 12 | 0.200 (0.240) | ** |
| 13 | 0.280 (0.320) | ** |
| 14 | 0.340 (0.360) | * |
| 17 | 0.380 (0.400) | * |
| 18 | 0.440 (0.480) | ** |
| 19 | 0.540 (0.600) | *** |
| 20 | 0.620 (0.640) | * |
| 21 | 0.660 (0.680) | * |
| 22 | 0.700 (0.720) | * |
| 23 | 0.780 (0.840) | *** |
| 26 | 0.860 (0.880) | * |
| 31 | 0.900 (0.920) | * |
| 34 | 0.940 (0.960) | * |
| 37 | 0.980 (1.000) | * |
| Score | Prop. | # scores (* = 1 score) |
|---|---|---|
| 0 | 0.180 (0.360) | ********* |
| 1 | 0.380 (0.400) | * |
| 2 | 0.420 (0.440) | * |
| 4 | 0.460 (0.480) | * |
| 5 | 0.520 (0.560) | ** |
| 9 | 0.600 (0.640) | ** |
| 10 | 0.680 (0.720) | ** |
| 11 | 0.740 (0.760) | * |
| 12 | 0.880 (1.000) | ****** |
Item statistics are not published as that would help candidates. To detect bad items, answers and comments from candidates are studied, as well as, for each problem, the correlation with total score on the remaining problems (item-rest correlation) and the proportion of candidates getting it wrong (hardness of the item). Possible bad items are revised, replaced, or removed, possibly resulting in a revised version of the test.